About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Chemistry and Physics of Interfaces
|
Presentation Title |
The Effect of Grain Boundary Energy Anisotropy and Triple Junctions on Grain Growth |
Author(s) |
Zipeng Xu, Gregory S Rohrer |
On-Site Speaker (Planned) |
Zipeng Xu |
Abstract Scope |
During thermally activated grain growth, grain boundaries migrate and change their areas to reduce the total excess free energy in the microstructure. Based on three-dimensional measurements of microstructure evolution, on average, low energy grain boundaries replace their neighboring higher energy grain boundaries areas to reduce total energy. It was also found that lateral changes in the grain boundary area are more significant than motion along the grain boundary normal. We hypothesize that the lateral change of the grain boundaries is controlled by energy difference between any particular boundary and the boundaries it is attached to. We extracted the triple junctions and correlated the grain boundaries properties with their neighbors. Interestingly, the energy difference between a boundary and its neighbors is found to be correlated to the area change. This correlation and its effect on grain growth will be discussed. The results show the importance of energy anisotropy during grain growth. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Other, |